Fresenius Medical Care 2008K Troubleshooting Manual page 33

F- 6.4.0 CHECK FLOW FROM VALVE #30 (FROM THE DRAIN NOZZLE)
a) Reattach valve #30's tubing but leave the connectors in the bucket for now.
b) From the Home screen, ASSURE Dialysate flow is set to 800 ml/min (NOT
"a800").
c) Referring to the Figure (right), remove the tubing from 'To Drain'
(*BOTTOM!) nozzle at the rear of the machine. *CAUTION! Do NOT
remove the top ('inlet water') tubing!
d) Press and release the 'RESET' key then immediately press and hold it for
three seconds. If the "Adjusting TMP" message is present allow it to
expire. It a TMP alarm occurs attempt the RESET sequence up to twice
more then continue.
IMPORTANT!
e) ASSURE Dialysate flow is ON (Dialysate Flow on/off LED off) and allow 20 seconds
for stabilization.
f) Without turning Dialysate flow off, measure flow from the drain nozzle for one minute. Two
measurements are recommended especially if the first is low. Greater than 750 ml/min?
Yes Using a flashlight, check the drain tubing for restrictions, possibly bio-growth. If no restrictions
are located the drain 'quick connector' (if present) may be bad.
No a) CAREFULLY (use a flashlight) check for restrictions, possibly bio-growth, inside the 'To
Drain' nozzle AND through valve #30's clear OUTPUT tubing between the valve and the
'To Drain' nozzle. If a restriction is located this is the problem!
b) Referring to
energized)?
F- 6.5.0 CHECK TRANSMEMBRANE PRESSURE (TMP)
a) Call the Home screen, set Dialysate Flow to 500 ml/min (NOT "a500") and press the 'CONFIRM' key.
b) Referring to Figure 12
and lower alarm Limits (positioned at 520 and 0) and an 'actual' TMP bar which is either red (with a TMP
alarm) or green (no TMP alarm). TMP is also displayed digitally at the top of the bar graph.
c) Press and release the 'RESET' key and then immediately press and hold it for three seconds. If a TMP
alarm reoccurs attempt RESET twice more.
d) Watch the (green or red) 'actual' TMP bar. TMP is STABLE if (and ONLY if) it REMAINS between the 0
and 520 limits AND varies less than +/- 40 mmHg in two minutes. Proceed accordingly (three scenarios):
Figure 10 (page 30), touch valve #30's (black) solenoid. Is it hot (i.e.
Yes The actuator board is okay. Replace valve #30.
No NOTE that VALVE #30 (ONLY) will be checked and proceed to page 78,
TROUBLESHOOTING
(page 31), the TMP bar graph is populated with three horizontal bars; yellow upper
Figure 12 – TMP Bar Graph
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 1 – Flow Errors In Dialysis Program
VALVES.
Page 31